About the security content of macOS High Sierra 10.13.3 Supplemental Update - Apple Support

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macOS High Sierra 10.13.3 Supplemental Update

Released February 19, 2018

CoreText

Available for: macOS High Sierra 10.13.3

Impact: Processing a maliciously crafted string may lead to heap corruption

Description: A memory corruption issue was addressed through improved input validation.

CVE-2018-4124: an anonymous researcher